DTC P0328 [LF, L3]

id0102008068a3

DTC P0328

Knock sensor circuit high input

DETECTION CONDITION

• The PCM monitors the input signal from the knock sensor when the engine is running. If the input voltage at PCM terminals between 2P and 2S is above 4.9 V, the PCM determines that the knock sensor circuit has a malfunction.
Diagnostic support note
• This is a continuous monitor (CCM).
• The MIL illuminates if the PCM detects the above malfunction conditions during first drive cycle.
• The PENDING CODE is available if the PCM detects the above malfunction condition.
• The FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.

POSSIBLE CAUSE

• Knock sensor malfunction
• Connector or terminal malfunction
• Short to power circuit in the wiring harness between knock sensor terminal A and PCM terminal 2S
• Short to power circuit in the wiring harness between knock sensor terminal B and PCM terminal 2P

Diagnostic procedure

STEP

INSPECTION

ACTION

1
PERFORM DTC CONFIRMATION PROCEDURE
• Perform the DTC CONFIRMATION PROCEDURE.
• Is the same DTC present?
Yes
Go to the next step.
No
Intermittent concern exists. Go to the INTERMITTENT CONCERN TROUBLESHOOTING procedure.
2
INSPECT KNOCK SENSOR CONNECTOR TERMINAL
• Turn the ignition switch to OFF position.
• Disconnect the knock sensor connector.
• Inspect for poor connection at terminals A and B (damaged, pulled-out pins, corrosion, etc.).
• Is there any malfunction?
Yes
Repair the terminal, then go to step 6.
No
Go to the next step.
3
INSPECT KNOCK SENSOR
• Perform the knock sensor inspection.
• Is the knock sensor normal?
Yes
Go to the next step.
No
Replace the knock sensor, then go to step 6.
4
INSPECT KNOCK SIGNAL CIRCUIT FOR SHORT TO POWER
• Turn the ignition switch to the ON position (Engine off).
• Measure the voltage between knock sensor terminal A (harness-side) and body ground and knock sensor terminal B (harness-side) and body ground?
• Is there any the voltage reading?
Yes
Repair or replace the wiring harness for a short to power, then go to step 6.
No
Go to the next step.
5
INSPECT PCM CONNECTOR
• Disconnect the PCM connector.
• Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace the terminal, then go to the next step.
No
Go to the next step.
6
VERIFY TROUBLESHOOTING OF DTC P0328 COMPLETED
• Make sure to connect all disconnected connectors.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Perform the KOEO/KOER self-test.
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
7
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
• Are any DTCs present?
Yes
Go to the applicable DTC troubleshooting.
No
Troubleshooting completed.